The results showed that, there are differences between the(hydrophilic) coated urearelease and the hydrophobic coated urearelease, the lag stage did not occur in the processes of CCU release;
结果表明：亲水性包膜尿素与非亲水性包膜尿素的释放情况有很大不同，不存在明显的滞后阶段；
2
"Marine animals release small amounts of urea, but the pollution problem is almost entirely human caused," says Kudela.
库德拉认为海洋动物排泄的尿素很少，污染问题几乎都是人类造成的。
3
The result showed: Among all examined fertilizers, the nutrient release rate of urea was the highest and that of controlled release nitrogen fertilizer was the lowest.